Attempt to establish VScode Remote Tunnel

[rule]
description = """
Detects the execution of the VScode portable binary with the tunnel command line option indicating an attempt to
establish a remote tunnel session to Github or a remote VScode instance.
"""
id = "13fd98ce-f1c3-423f-9441-45c50eb462c0"
license = "Elastic License v2"
name = "Attempt to establish VScode Remote Tunnel"
os_list = ["macos", "windows"]
reference = ["https://badoption.eu/blog/2023/01/31/code_c2.html"]
version = "1.0.11"

query = '''
process where event.type == "start" and event.action in ("exec", "start") and 
 process.name : ("code", "code.exe") and process.args : "tunnel" and 
 not (process.name : "code-tunnel*.exe" and process.args  : ("status", "--log-to-file"))
'''

min_endpoint_version = "7.15.0"
optional_actions = []
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0

[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"
[[threat.technique.subtechnique]]
id = "T1059.001"
name = "PowerShell"
reference = "https://attack.mitre.org/techniques/T1059/001/"

[[threat.technique.subtechnique]]
id = "T1059.003"
name = "Windows Command Shell"
reference = "https://attack.mitre.org/techniques/T1059/003/"

[[threat.technique.subtechnique]]
id = "T1059.004"
name = "Unix Shell"
reference = "https://attack.mitre.org/techniques/T1059/004/"



[threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1102"
name = "Web Service"
reference = "https://attack.mitre.org/techniques/T1102/"
[[threat.technique.subtechnique]]
id = "T1102.002"
name = "Bidirectional Communication"
reference = "https://attack.mitre.org/techniques/T1102/002/"



[threat.tactic]
id = "TA0011"
name = "Command and Control"
reference = "https://attack.mitre.org/tactics/TA0011/"

[internal]
min_endpoint_version = "7.15.0"